generic getutmp() and getutmpx() implementation

[Mark Kettenis <kettenis@wins.uva.nl>]

HJ's versions of getutmp() and getutmpx() were not really useful as
generic implementation.  This patch does implement them in a better
way.

Mark


1999-05-14  Mark Kettenis  <kettenis@gnu.org>

	* sysdeps/generic/getutmp.c: Include <string.h>
	(getutmp): Rewrite to only copy those members that are really
	present in `struct utmp'.
	* sysdeps/generic/getutmpx.c: Likewise.


--- /home/kettenis/CVS/libc/sysdeps/generic/getutmp.c	Thu May 13 21:50:04 1999
+++ libc/sysdeps/generic/getutmp.c	Fri May 14 18:06:16 1999
@@ -16,25 +16,31 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <string.h>
 #include <utmp.h>
 #include <utmpx.h>
 
+/* Copy the information in UTMPX to UTMP. */
 void
 getutmp (const struct utmpx *utmpx, struct utmp *utmp)
 {
+#if _HAVE_UT_TYPE - 0
   utmp->ut_type = utmpx->ut_type;
+#endif
+#if _HAVE_UT_PID - 0
   utmp->ut_pid = utmpx->ut_pid;
+#endif
   memcpy (utmp->ut_line, utmpx->ut_line, sizeof (utmp->ut_line));
-  memcpy (utmp->ut_id, utmpx->ut_id, sizeof (utmp->ut_id));
   memcpy (utmp->ut_user, utmpx->ut_user, sizeof (utmp->ut_user));
+#if _HAVE_UT_ID - 0
+  memcpy (utmp->ut_id, utmpx->ut_id, sizeof (utmp->ut_id));
+#endif
+#if _HAVE_UT_HOST - 0
   memcpy (utmp->ut_host, utmpx->ut_host, sizeof (utmp->ut_host));
-#ifdef _GNU_SOURCE
-  utmp->ut_exit.e_termination = utmpx->ut_exit.e_termination;
-  utmp->ut_exit.e_exit = utmpx->ut_exit.e_exit;
-#else
-  utmp->ut_exit.__e_termination = utmpx->ut_exit.e_termination;
-  utmp->ut_exit.__e_exit = utmpx->ut_exit.e_exit;
 #endif
-  utmp->ut_session = utmpx->ut_session;
+#if _HAVE_UT_TV - 0
   utmp->ut_tv = utmpx->ut_tv;
+#else
+  utmp->ut_time = utmpx->ut_time;
+#endif
 }
--- /home/kettenis/CVS/libc/sysdeps/generic/getutmpx.c	Thu May 13 21:50:16 1999
+++ libc/sysdeps/generic/getutmpx.c	Fri May 14 18:06:01 1999
@@ -16,25 +16,33 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <string.h>
 #include <utmp.h>
 #include <utmpx.h>
 
+/* Copy the information in UTMP to UTMPX. */
 void
 getutmpx (const struct utmp *utmp, struct utmpx *utmpx)
 {
+  memset (utmpx, 0, sizeof (struct utmpx));
+
+#if _HAVE_UT_TYPE - 0
   utmpx->ut_type = utmp->ut_type;
+#endif
+#if _HAVE_UT_PID - 0
   utmpx->ut_pid = utmp->ut_pid;
-  memcpy (utmpx->ut_line, utmp->ut_line, sizeof (utmpx->ut_line));
-  memcpy (utmpx->ut_id, utmp->ut_id, sizeof (utmpx->ut_id));
-  memcpy (utmpx->ut_user, utmp->ut_user, sizeof (utmpx->ut_user));
-  memcpy (utmpx->ut_host, utmp->ut_host, sizeof (utmpx->ut_host));
-#ifdef _GNU_SOURCE
-  utmpx->ut_exit.e_termination = utmp->ut_exit.e_termination;
-  utmpx->ut_exit.e_exit = utmp->ut_exit.e_exit;
-#else
-  utmpx->ut_exit.__e_termination = utmp->ut_exit.e_termination;
-  utmpx->ut_exit.__e_exit = utmp->ut_exit.e_exit;
 #endif
-  utmpx->ut_session = utmp->ut_session;
+  memcpy (utmpx->ut_line, utmp->ut_line, sizeof (utmp->ut_line));
+  memcpy (utmpx->ut_user, utmp->ut_user, sizeof (utmp->ut_user));
+#if _HAVE_UT_ID - 0
+  memcpy (utmpx->ut_id, utmp->ut_id, sizeof (utmp->ut_id));
+#endif
+#if _HAVE_UT_HOST - 0
+  memcpy (utmpx->ut_host, utmp->ut_host, sizeof (utmp->ut_host));
+#endif
+#if _HAVE_UT_TV - 0
   utmpx->ut_tv = utmp->ut_tv;
+#else
+  utmpx->ut_time = utmp->ut_time;
+#endif
 }